firmware/drivers/isp1583.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Tomasz Malesinski
  11  * Copyright (C) 2008 by Maurus Cuelenaere
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22
  23 #include "config.h"
  24 #include "usb_ch9.h"
  25 #include "usb_drv.h"
  26 #include "usb_core.h"
  27 #include "isp1583.h"
  28 #include "thread.h"
  29 #include "logf.h"
  30 #include "stdio.h"
  31
  32 #define DIR_RX                      0
  33 #define DIR_TX                      1
  34
  35 struct usb_endpoint
  36 {
  37     unsigned char *out_buf;
  38     short out_len;
  39     short out_ptr;
  40     void (*out_done)(int, unsigned char *, int);
  41     unsigned char out_in_progress;
  42
  43     unsigned char *in_buf;
  44     short in_min_len;
  45     short in_max_len;
  46     short in_ptr;
  47     void (*in_done)(int, unsigned char *, int);
  48     unsigned char in_ack;
  49
  50     unsigned char halt[2];
  51     unsigned char enabled[2];
  52     short max_pkt_size[2];
  53     short type;
  54     char allocation;
  55 };
  56
  57 static unsigned char setup_pkt_buf[8];
  58 static struct usb_endpoint endpoints[USB_NUM_ENDPOINTS];
  59
  60 static bool high_speed_mode = false;
  61
  62 static inline void or_int_value(volatile unsigned short *a, volatile unsigned short *b, unsigned long r, unsigned long value)
  63 {
  64     set_int_value(*a, *b, (r | value));
  65 }
  66 static inline void bc_int_value(volatile unsigned short *a, volatile unsigned short *b, unsigned long r, unsigned long value)
  67 {
  68     set_int_value(*a, *b, (r & ~value));
  69 }
  70
  71 static inline void nop_f(void)
  72 {
  73     yield();
  74 }
  75
  76 #define NOP     asm volatile("nop\n");
  77
  78 static inline int ep_index(int n, bool dir)
  79 {
  80     return (n << 1) | dir;
  81 }
  82
  83 static inline bool epidx_dir(int idx)
  84 {
  85     return idx & 1;
  86 }
  87
  88 static inline int epidx_n(int idx)
  89 {
  90     return idx >> 1;
  91 }
  92
  93 static inline void usb_select_endpoint(int idx)
  94 {
  95     /* Select the endpoint */
  96     ISP1583_DFLOW_EPINDEX = idx;
  97     /* The delay time from the Write Endpoint Index register to the Read Data Port register must be at least 190 ns.
  98     * The delay time from the Write Endpoint Index register to the Write Data Port register must be at least 100 ns.
  99     */
 100     NOP;
 101 }
 102
 103 static inline void usb_select_setup_endpoint(void)
 104 {
 105     /* Select the endpoint */
 106     ISP1583_DFLOW_EPINDEX = DFLOW_EPINDEX_EP0SETUP;
 107     /* The delay time from the Write Endpoint Index register to the Read Data Port register must be at least 190 ns.
 108     * The delay time from the Write Endpoint Index register to the Write Data Port register must be at least 100 ns.
 109     */
 110     NOP;
 111 }
 112
 113 static void usb_setup_endpoint(int idx, int max_pkt_size, int type)
 114 {
 115     if(epidx_n(idx)!=0)
 116     {
 117         usb_select_endpoint(idx);
 118         ISP1583_DFLOW_MAXPKSZ = max_pkt_size & 0x7FF;
 119         ISP1583_DFLOW_EPTYPE = (DFLOW_EPTYPE_NOEMPKT | DFLOW_EPTYPE_DBLBUF | (type & 0x3));
 120
 121         /* clear buffer ... */
 122         ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_CLBUF;
 123         /* ... twice because of double buffering */
 124         usb_select_endpoint(idx);
 125         ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_CLBUF;
 126     }
 127
 128     struct usb_endpoint *ep;
 129     ep = &(endpoints[epidx_n(idx)]);
 130     ep->halt[epidx_dir(idx)] = 0;
 131     ep->enabled[epidx_dir(idx)] = 0;
 132     ep->out_in_progress = 0;
 133     ep->in_min_len = -1;
 134     ep->in_ack = 0;
 135     ep->type = type;
 136     ep->max_pkt_size[epidx_dir(idx)] = max_pkt_size;
 137 }
 138
 139 static void usb_enable_endpoint(int idx)
 140 {
 141     if(epidx_n(idx)!=0)
 142     {
 143         usb_select_endpoint(idx);
 144         /* Enable interrupt */
 145         or_int_value(&ISP1583_INIT_INTEN_A, &ISP1583_INIT_INTEN_B, ISP1583_INIT_INTEN_READ, 1 << (10 + idx));
 146         /* Enable endpoint */
 147         ISP1583_DFLOW_EPTYPE |= DFLOW_EPTYPE_ENABLE;
 148     }
 149
 150     endpoints[epidx_n(idx)].enabled[epidx_dir(idx)] = 1;
 151 }
 152 /*
 153 static void usb_disable_endpoint(int idx, bool set_struct)
 154 {
 155     usb_select_endpoint(idx);
 156     ISP1583_DFLOW_EPTYPE &= ~DFLOW_EPTYPE_ENABLE;
 157     bc_int_value(&ISP1583_INIT_INTEN_A, &ISP1583_INIT_INTEN_B, ISP1583_INIT_INTEN_READ, 1 << (10 + idx));
 158
 159     if(set_struct)
 160         endpoints[epidx_n(idx)].enabled[epidx_dir(idx)] = 0;
 161 }
 162 */
 163 static int usb_get_packet(unsigned char *buf, int max_len)
 164 {
 165     int len, i;
 166     len = ISP1583_DFLOW_BUFLEN;
 167
 168     if (max_len < 0 || max_len > len)
 169         max_len = len;
 170
 171     i = 0;
 172     while (i < len)
 173     {
 174         unsigned short d = ISP1583_DFLOW_DATA;
 175         if (i < max_len)
 176             buf[i] = d & 0xff;
 177         i++;
 178         if (i < max_len)
 179             buf[i] = (d >> 8) & 0xff;
 180         i++;
 181     }
 182     return max_len;
 183 }
 184
 185 static int usb_receive(int n)
 186 {
 187     logf("usb_receive(%d)", n);
 188     int len;
 189
 190     if (endpoints[n].halt[DIR_RX]
 191         || !endpoints[n].enabled[DIR_RX]
 192         || endpoints[n].in_min_len < 0
 193         || !endpoints[n].in_ack)
 194         return -1;
 195
 196     endpoints[n].in_ack = 0;
 197
 198     usb_select_endpoint(ep_index(n, DIR_RX));
 199
 200     len = usb_get_packet(endpoints[n].in_buf + endpoints[n].in_ptr,
 201                          endpoints[n].in_max_len - endpoints[n].in_ptr);
 202     endpoints[n].in_ptr += len;
 203
 204     if (endpoints[n].in_ptr >= endpoints[n].in_min_len)
 205     {
 206         endpoints[n].in_min_len = -1;
 207         if (endpoints[n].in_done)
 208             (*(endpoints[n].in_done))(n, endpoints[n].in_buf,
 209                                       endpoints[n].in_ptr);
 210     }
 211     logf("receive_end");
 212     return 0;
 213 }
 214
 215 static bool usb_out_buffer_full(int ep)
 216 {
 217     usb_select_endpoint(ep_index(ep, DIR_TX));
 218     if (ISP1583_DFLOW_EPTYPE & 4)   /* Check if type=bulk and double buffering is set */
 219         return (ISP1583_DFLOW_BUFSTAT & 3) == 3; /* Return true if both buffers are filled */
 220     else
 221         return (ISP1583_DFLOW_BUFSTAT & 3) != 0; /* Return true if one of the buffers are filled */
 222 }
 223
 224 static int usb_send(int n)
 225 {
 226     logf("usb_send(%d)", n);
 227     int max_pkt_size, len;
 228     int i;
 229     unsigned char *p;
 230
 231     if (endpoints[n].halt[DIR_TX]
 232         || !endpoints[n].enabled[DIR_TX]
 233         || !endpoints[n].out_in_progress)
 234     {
 235         logf("NOT SEND TO EP!");
 236         return -1;
 237     }
 238
 239     if (endpoints[n].out_ptr < 0)
 240     {
 241         endpoints[n].out_in_progress = 0;
 242         if (endpoints[n].out_done)
 243             (*(endpoints[n].out_done))(n, endpoints[n].out_buf,
 244                                        endpoints[n].out_len);
 245         logf("ALREADY SENT TO EP!");
 246         return -1;
 247     }
 248
 249     if (usb_out_buffer_full(n))
 250     {
 251         logf("BUFFER FULL!");
 252         return -1;
 253     }
 254
 255     usb_select_endpoint(ep_index(n, DIR_TX));
 256     max_pkt_size = endpoints[n].max_pkt_size[DIR_TX];
 257     len = endpoints[n].out_len - endpoints[n].out_ptr;
 258     if (len > max_pkt_size)
 259         len = max_pkt_size;
 260
 261     if(len < max_pkt_size)
 262         ISP1583_DFLOW_BUFLEN = len;
 263
 264     p = endpoints[n].out_buf + endpoints[n].out_ptr;
 265     i = 0;
 266     while (len - i >= 2)
 267     {
 268         ISP1583_DFLOW_DATA = p[i] | (p[i + 1] << 8);
 269         i += 2;
 270     }
 271     if (i < len)
 272         ISP1583_DFLOW_DATA = p[i];
 273
 274     endpoints[n].out_ptr += len;
 275
 276 /*
 277     if (endpoints[n].out_ptr == endpoints[n].out_len
 278         && len < max_pkt_size)
 279 */
 280     if (endpoints[n].out_ptr == endpoints[n].out_len)
 281         endpoints[n].out_ptr = -1;
 282
 283     logf("send_end");
 284     return 0;
 285 }
 286
 287 static void usb_stall_endpoint(int idx)
 288 {
 289     usb_select_endpoint(idx);
 290     ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_STALL;
 291     endpoints[epidx_n(idx)].halt[epidx_dir(idx)] = 1;
 292 }
 293
 294 static void usb_unstall_endpoint(int idx)
 295 {
 296     usb_select_endpoint(idx);
 297     ISP1583_DFLOW_CTRLFUN &= ~DFLOW_CTRLFUN_STALL;
 298     ISP1583_DFLOW_EPTYPE &= ~DFLOW_EPTYPE_ENABLE;
 299     ISP1583_DFLOW_EPTYPE |= DFLOW_EPTYPE_ENABLE;
 300     ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_CLBUF;
 301     if (epidx_dir(idx) == DIR_TX)
 302         endpoints[epidx_n(idx)].out_in_progress = 0;
 303     else
 304     {
 305         endpoints[epidx_n(idx)].in_min_len = -1;
 306         endpoints[epidx_n(idx)].in_ack = 0;
 307     }
 308     endpoints[epidx_n(idx)].halt[epidx_dir(idx)] = 0;
 309 }
 310
 311 static void usb_status_ack(int ep, int dir)
 312 {
 313     logf("usb_status_ack(%d)", dir);
 314     if(ep == EP_CONTROL)
 315         usb_select_setup_endpoint();
 316     else
 317         usb_select_endpoint(ep_index(ep, dir));
 318
 319     ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_STATUS;
 320 }
 321
 322 static void usb_data_stage_enable(int ep, int dir)
 323 {
 324     logf("usb_data_stage_enable(%d)", dir);
 325     usb_select_endpoint(ep_index(ep, dir));
 326     ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_DSEN;
 327 }
 328
 329 static void usb_handle_setup_rx(void)
 330 {
 331     int len;
 332     usb_select_setup_endpoint();
 333     len = usb_get_packet(setup_pkt_buf, 8);
 334
 335     if (len == 8)
 336     {
 337         ISP1583_DFLOW_CTRLFUN |= DFLOW_CTRLFUN_STATUS; /* Acknowledge packet */
 338         usb_core_control_request((struct usb_ctrlrequest*)setup_pkt_buf);
 339     }
 340     else
 341     {
 342         usb_drv_stall(0, true, false);
 343         usb_drv_stall(0, true, true);
 344         logf("usb_handle_setup_rx() failed");
 345         return;
 346     }
 347
 348     logf("usb_handle_setup_rx(): %02x %02x %02x %02x %02x %02x %02x %02x", setup_pkt_buf[0], setup_pkt_buf[1], setup_pkt_buf[2], setup_pkt_buf[3], setup_pkt_buf[4], setup_pkt_buf[5], setup_pkt_buf[6], setup_pkt_buf[7]);
 349 }
 350
 351 static void usb_handle_data_int(int ep, int dir)
 352 {
 353     int len;
 354     if (dir == DIR_TX)
 355         len = usb_send(ep);
 356     else
 357     {
 358         len = usb_receive(ep);
 359         endpoints[ep].in_ack = 1;
 360     }
 361     logf("usb_handle_data_int(%d, %d) finished", ep, dir);
 362 }
 363
 364 bool usb_drv_powered(void)
 365 {
 366 #if 0
 367     return (ISP1583_INIT_OTG & INIT_OTG_BSESS_VALID) ? true : false;
 368 #else
 369     return (ISP1583_INIT_MODE & INIT_MODE_VBUSSTAT) ? true : false;
 370 #endif
 371 }
 372
 373 static void setup_endpoints(void)
 374 {
 375     usb_setup_endpoint(ep_index(0, DIR_RX), 64, 0);
 376     usb_setup_endpoint(ep_index(0, DIR_TX), 64, 0);
 377
 378     int i;
 379     for(i = 1; i < USB_NUM_ENDPOINTS-1; i++)
 380     {
 381         usb_setup_endpoint(ep_index(i, DIR_RX), (high_speed_mode ? 512 : 64), 2); /* 2 = TYPE_BULK */
 382         usb_setup_endpoint(ep_index(i, DIR_TX), (high_speed_mode ? 512 : 64), 2);
 383     }
 384
 385     usb_enable_endpoint(ep_index(0, DIR_RX));
 386     usb_enable_endpoint(ep_index(0, DIR_TX));
 387
 388     for (i = 1; i < USB_NUM_ENDPOINTS-1; i++)
 389     {
 390         usb_enable_endpoint(ep_index(i, DIR_RX));
 391         usb_enable_endpoint(ep_index(i, DIR_TX));
 392     }
 393
 394     ZVM_SPECIFIC;
 395 }
 396
 397 void usb_helper(void)
 398 {
 399     if(ISP1583_GEN_INT_READ & ISP1583_INIT_INTEN_READ)
 400     {
 401         logf("Helper detected interrupt... [%d]", (int)current_tick);
 402         usb_drv_int();
 403     }
 404     return;
 405 }
 406
 407 void usb_drv_init(void)
 408 {
 409     /* Disable interrupt at CPU level */
 410     DIS_INT_CPU_TARGET;
 411
 412     /* Unlock the device's registers */
 413     ISP1583_GEN_UNLCKDEV = ISP1583_UNLOCK_CODE;
 414
 415     /* Soft reset the device */
 416     ISP1583_INIT_MODE = INIT_MODE_SFRESET;
 417     sleep(10);
 418     /* Enable CLKAON & GLINTENA */
 419     ISP1583_INIT_MODE = STANDARD_INIT_MODE;
 420
 421     /* Disable all OTG functions */
 422     ISP1583_INIT_OTG = 0;
 423
 424     #ifdef DEBUG
 425     logf("BUS_CONF/DA0:%d MODE0/DA1: %d MODE1: %d", (bool)(ISP1583_INIT_MODE & INIT_MODE_TEST0), (bool)(ISP1583_INIT_MODE & INIT_MODE_TEST1), (bool)(ISP1583_INIT_MODE & INIT_MODE_TEST2));
 426     logf("Chip ID: 0x%x", ISP1583_GEN_CHIPID);
 427     //logf("INV0: 0x% IRQEDGE: 0x%x IRQPORT: 0x%x", IO_GIO_INV0, IO_GIO_IRQEDGE, IO_GIO_IRQPORT);
 428     #endif
 429
 430     /*Set interrupt generation to target-specific mode +
 431     * Set the control pipe to ACK only interrupt +
 432     * Set the IN pipe to ACK only interrupt +
 433     * Set OUT pipe to ACK and NYET interrupt
 434     */
 435
 436     ISP1583_INIT_INTCONF = 0x54 | INT_CONF_TARGET;
 437     /* Clear all interrupts */
 438     set_int_value(ISP1583_GEN_INT_A, ISP1583_GEN_INT_B, 0xFFFFFFFF);
 439     /* Enable USB interrupts */
 440     set_int_value(ISP1583_INIT_INTEN_A, ISP1583_INIT_INTEN_B, STANDARD_INTEN);
 441
 442     ZVM_SPECIFIC;
 443
 444     /* Enable interrupt at CPU level */
 445     EN_INT_CPU_TARGET;
 446
 447     setup_endpoints();
 448
 449     /* Clear device address and disable it */
 450     ISP1583_INIT_ADDRESS = 0;
 451
 452     /* Turn SoftConnect on */
 453     ISP1583_INIT_MODE |= INIT_MODE_SOFTCT;
 454
 455     ZVM_SPECIFIC;
 456
 457     //tick_add_task(usb_helper);
 458
 459     logf("usb_init_device() finished");
 460 }
 461
 462 int usb_drv_port_speed(void)
 463 {
 464     return (int)high_speed_mode;
 465 }
 466
 467 void usb_drv_exit(void)
 468 {
 469     logf("usb_drv_exit()");
 470
 471     /* Disable device */
 472     ISP1583_INIT_MODE &= ~INIT_MODE_SOFTCT;
 473     ISP1583_INIT_ADDRESS = 0;
 474
 475     /* Disable interrupts */
 476     set_int_value(ISP1583_INIT_INTEN_A, ISP1583_INIT_INTEN_B, 0);
 477     /* and the CPU's one... */
 478     DIS_INT_CPU_TARGET;
 479
 480
 481     /* Send usb controller to suspend mode */
 482     ISP1583_INIT_MODE = INIT_MODE_GOSUSP;
 483     ISP1583_INIT_MODE = 0;
 484
 485     //tick_remove_task(usb_helper);
 486
 487     ZVM_SPECIFIC;
 488 }
 489
 490 void usb_drv_stall(int endpoint, bool stall, bool in)
 491 {
 492     logf("%sstall EP%d %s", (stall ? "" : "un"), endpoint, (in ? "RX" : "TX" ));
 493     if (stall)
 494         usb_stall_endpoint(ep_index(endpoint, (int)in));
 495     else
 496         usb_unstall_endpoint(ep_index(endpoint, (int)in));
 497 }
 498
 499 bool usb_drv_stalled(int endpoint, bool in)
 500 {
 501     return (endpoints[endpoint].halt[(int)in] == 1);
 502 }
 503
 504 static void out_callback(int ep, unsigned char *buf, int len)
 505 {
 506     (void)buf;
 507     logf("out_callback(%d, 0x%x, %d)", ep, (int)buf, len);
 508     usb_status_ack(ep, DIR_RX);
 509     usb_core_transfer_complete(ep, true, 0, len); /* 0=>status succeeded, haven't worked out status failed yet... */
 510 }
 511
 512 static void in_callback(int ep, unsigned char *buf, int len)
 513 {
 514     (void)buf;
 515     logf("in_callback(%d, 0x%x, %d)", ep, (int)buf, len);
 516     usb_status_ack(ep, DIR_TX);
 517     usb_core_transfer_complete(ep, false, 0, len);
 518 }
 519
 520 int usb_drv_recv(int ep, void* ptr, int length)
 521 {
 522     logf("usb_drv_recv(%d, 0x%x, %d)", ep, (int)ptr, length);
 523     if(ep == 0 && length == 0 && ptr == NULL)
 524     {
 525         usb_status_ack(ep, DIR_TX);
 526         return 0;
 527     }
 528     endpoints[ep].in_done = in_callback;
 529     endpoints[ep].in_buf = ptr;
 530     endpoints[ep].in_max_len = length;
 531     endpoints[ep].in_min_len = length;
 532     endpoints[ep].in_ptr = 0;
 533     if(ep == 0)
 534     {
 535         usb_data_stage_enable(ep, DIR_RX);
 536         return usb_receive(ep);
 537     }
 538     else
 539         return usb_receive(ep);
 540 }
 541
 542 int usb_drv_send_nonblocking(int ep, void* ptr, int length)
 543 {
 544     /* First implement DMA... */
 545     return usb_drv_send(ep, ptr, length);
 546 }
 547
 548 static void usb_drv_wait(int ep, bool send)
 549 {
 550     logf("usb_drv_wait(%d, %d)", ep, send);
 551     if(send)
 552     {
 553         while (endpoints[ep].out_in_progress)
 554             nop_f();
 555     }
 556     else
 557     {
 558         while (endpoints[ep].in_ack)
 559             nop_f();
 560     }
 561 }
 562
 563 int usb_drv_send(int ep, void* ptr, int length)
 564 {
 565     logf("usb_drv_send_nb(%d, 0x%x, %d)", ep, (int)ptr, length);
 566     if(ep == 0 && length == 0 && ptr == NULL)
 567     {
 568         usb_status_ack(ep, DIR_RX);
 569         return 0;
 570     }
 571     if(endpoints[ep].out_in_progress == 1)
 572         return -1;
 573     endpoints[ep].out_done = out_callback;
 574     endpoints[ep].out_buf = ptr;
 575     endpoints[ep].out_len = length;
 576     endpoints[ep].out_ptr = 0;
 577     endpoints[ep].out_in_progress = 1;
 578     if(ep == 0)
 579     {
 580         int rc = usb_send(ep);
 581         usb_data_stage_enable(ep, DIR_TX);
 582         usb_drv_wait(ep, DIR_TX);
 583         return rc;
 584     }
 585     else
 586         return usb_send(ep);
 587 }
 588
 589 void usb_drv_reset_endpoint(int ep, bool send)
 590 {
 591     logf("reset endpoint(%d, %d)", ep, send);
 592     usb_setup_endpoint(ep_index(ep, (int)send), endpoints[ep].max_pkt_size[(int)send], endpoints[ep].type);
 593     usb_enable_endpoint(ep_index(ep, (int)send));
 594 }
 595
 596 void usb_drv_cancel_all_transfers(void)
 597 {
 598     logf("usb_drv_cancel_all_tranfers()");
 599     int i;
 600
 601     for(i=0;i<USB_NUM_ENDPOINTS-1;i++)
 602         endpoints[i].halt[0] = endpoints[i].halt[1] = 1;
 603 }
 604
 605 int usb_drv_request_endpoint(int dir)
 606 {
 607     int i, bit;
 608
 609     bit=(dir & USB_DIR_IN)? 2:1;
 610
 611     for (i=1; i < USB_NUM_ENDPOINTS; i++) {
 612         if((endpoints[i].allocation & bit)!=0)
 613             continue;
 614         endpoints[i].allocation |= bit;
 615         return i | dir;
 616     }
 617
 618     return -1;
 619 }
 620
 621 void usb_drv_release_endpoint(int ep)
 622 {
 623     int mask = (ep & USB_DIR_IN)? ~2:~1;
 624     endpoints[ep & 0x7f].allocation &= mask;
 625 }
 626
 627 static void bus_reset(void)
 628 {
 629     /* Enable CLKAON & GLINTENA */
 630     ISP1583_INIT_MODE = STANDARD_INIT_MODE;
 631     /* Enable USB interrupts */
 632     ISP1583_INIT_INTCONF = 0x54 | INT_CONF_TARGET;
 633     set_int_value(ISP1583_INIT_INTEN_A, ISP1583_INIT_INTEN_B, STANDARD_INTEN);
 634
 635     /* Disable all OTG functions */
 636     ISP1583_INIT_OTG = 0;
 637
 638     /* Clear device address and enable it */
 639     ISP1583_INIT_ADDRESS = INIT_ADDRESS_DEVEN;
 640
 641     ZVM_SPECIFIC;
 642
 643     /* Reset endpoints to default */
 644     setup_endpoints();
 645
 646     logf("bus reset->done");
 647 }
 648
 649 /* Method for handling interrupts, must be called from usb-<target>.c */
 650 void IRAM_ATTR usb_drv_int(void)
 651 {
 652     unsigned long ints;
 653     ints = ISP1583_GEN_INT_READ & ISP1583_INIT_INTEN_READ;
 654
 655     if(!ints)
 656         return;
 657
 658     /* Unlock the device's registers */
 659     ISP1583_GEN_UNLCKDEV = ISP1583_UNLOCK_CODE;
 660
 661     //logf(" handling int [0x%lx & 0x%lx = 0x%x]", ISP1583_GEN_INT_READ, ISP1583_INIT_INTEN_READ, (int)ints);
 662
 663     if(ints & INT_IEBRST) /* Bus reset */
 664     {
 665         logf("BRESET");
 666         high_speed_mode = false;
 667         bus_reset();
 668         usb_core_bus_reset();
 669         /* Mask bus reset interrupt */
 670         set_int_value(ISP1583_GEN_INT_A, ISP1583_GEN_INT_B, INT_IEBRST);
 671         return;
 672     }
 673     if(ints & INT_IEP0SETUP) /* EP0SETUP interrupt */
 674     {
 675         logf("EP0SETUP");
 676         usb_handle_setup_rx();
 677     }
 678     if(ints & INT_IEHS_STA) /* change from full-speed to high-speed mode -> endpoints need to get reconfigured!! */
 679     {
 680         logf("HS_STA");
 681         high_speed_mode = true;
 682         setup_endpoints();
 683     }
 684     if(ints & INT_EP_MASK) /* Endpoints interrupt */
 685     {
 686         unsigned long ep_event;
 687         unsigned short i = 10;
 688         ep_event = ints & INT_EP_MASK;
 689         while(ep_event)
 690         {
 691             if(i>25)
 692                 break;
 693
 694             if(ep_event & (1 << i))
 695             {
 696                 logf("EP%d %s interrupt", (i - 10) / 2, i % 2 ? "RX" : "TX");
 697                 usb_handle_data_int((i - 10) / 2, i % 2);
 698                 ep_event &= ~(1 << i);
 699             }
 700             i++;
 701         }
 702     }
 703     if(ints & INT_IERESM && !(ints & INT_IESUSP)) /* Resume status: status change from suspend to resume (active) */
 704     {
 705         logf("RESM");
 706     }
 707     if(ints & INT_IESUSP && !(ints & INT_IERESM)) /* Suspend status: status change from active to suspend */
 708     {
 709         logf("SUSP");
 710     }
 711     if(ints & INT_IEDMA) /* change in the DMA Interrupt Reason register */
 712     {
 713         logf("DMA");
 714     }
 715     if(ints & INT_IEVBUS) /* transition from LOW to HIGH on VBUS */
 716     {
 717         logf("VBUS");
 718     }
 719     /* Mask all (enabled) interrupts */
 720     set_int_value(ISP1583_GEN_INT_A, ISP1583_GEN_INT_B, ints);
 721
 722     ZVM_SPECIFIC;
 723 }
 724
 725 void usb_drv_set_address(int address)
 726 {
 727     logf("usb_drv_set_address(0x%x)", address);
 728     ISP1583_INIT_ADDRESS = (address & 0x7F) | INIT_ADDRESS_DEVEN;
 729
 730     ZVM_SPECIFIC;
 731 }
 732
 733 void usb_drv_set_test_mode(int mode)
 734 {
 735     logf("usb_drv_set_test_mode(%d)", mode);
 736     switch(mode){
 737         case 0:
 738             ISP1583_GEN_TSTMOD = 0;
 739             /* Power cycle... */
 740             break;
 741         case 1:
 742             ISP1583_GEN_TSTMOD = GEN_TSTMOD_JSTATE;
 743             break;
 744         case 2:
 745             ISP1583_GEN_TSTMOD = GEN_TSTMOD_KSTATE;
 746             break;
 747         case 3:
 748             ISP1583_GEN_TSTMOD = GEN_TSTMOD_SE0_NAK;
 749             break;
 750         case 4:
 751             //REG_PORTSC1 |= PORTSCX_PTC_PACKET;
 752             break;
 753         case 5:
 754             //REG_PORTSC1 |= PORTSCX_PTC_FORCE_EN;
 755             break;
 756     }
 757 }
 758
 759 #ifndef BOOTLOADER
 760 int dbg_usb_num_items(void)
 761 {
 762     return 2+USB_NUM_ENDPOINTS*2;
 763 }
 764
 765 char* dbg_usb_item(int selected_item, void *data, char *buffer, size_t buffer_len)
 766 {
 767     if(selected_item < 2)
 768     {
 769         switch(selected_item)
 770         {
 771             case 0:
 772                 snprintf(buffer, buffer_len, "USB connected: %s", (usb_drv_connected() ? "Yes" : "No"));
 773                 return buffer;
 774             case 1:
 775                 snprintf(buffer, buffer_len, "HS mode: %s", (high_speed_mode ? "Yes" : "No"));
 776                 return buffer;
 777         }
 778     }
 779     else
 780     {
 781         int n = ep_index((selected_item - 2) / 2, (selected_item - 2) % 2);
 782         if(endpoints[n].enabled == false)
 783             snprintf(buffer, buffer_len, "EP%d[%s]: DISABLED", epidx_n(n), (epidx_dir(n) ? "TX" : "RX"));
 784         else
 785         {
 786             if(epidx_dir(n))
 787             {
 788                 if(endpoints[n].out_in_progress)
 789                     snprintf(buffer, buffer_len, "EP%d[TX]: TRANSFERRING DATA -> %d bytes/%d bytes", epidx_n(n), (endpoints[n].out_len - endpoints[n].out_ptr), endpoints[n].out_len);
 790                 else
 791                     snprintf(buffer, buffer_len, "EP%d[TX]: STANDBY", epidx_n(n));
 792             }
 793             else
 794             {
 795                 if(endpoints[n].in_buf && !endpoints[n].in_ack)
 796                     snprintf(buffer, buffer_len, "EP%d[RX]: RECEIVING DATA -> %d bytes/%d bytes", epidx_n(n), endpoints[n].in_ptr, endpoints[n].in_max_len);
 797                 else
 798                     snprintf(buffer, buffer_len, "EP%d[RX]: STANDBY", epidx_n(n));
 799             }
 800         }
 801         return buffer;
 802     }
 803     return NULL;
 804     (void)data;
 805 }
 806 #endif